Crusher.



PATBNTED FEB. 1a, 190g.

M. G. BUNNBLLV. GRUSHBR.

APPLICATION FILED HAY 29,1907.

2 SHEETS-SHEET 1.

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UNITED sTATEs PATENT oEEioE.

MORTON G. BUNNELL, OF PORTER, INDIANA, ASSIGNOR TO AUSTIN MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CRUSHER.

Specification of Letters Patent.

Patented Feb. 18, 1908.

To all whom it may concern:

Be it known that I, MoEToN G. BUNNELL, a citizen of the United States of America, and resident of Porter, Porter county, Indiana, have invented a certain new and useful Improvement in Crushers, of which the following is a specification.

My invention relates to crushers of that type in which a movable jaw is opposed to a stationary jaw to provide a hopper between them. It relates more particularly to crushers of this kind in which the movable jaw is supported by hangers, and in which the lever or other member for operating the jaw is fulcrumed on the end of a swinging yoke. Ordinarily, in crushers of this particular character, there are bearings at the upper and lower ends of the hangers, and at the opposite ends of the said yoke. As the weight of the jaw and the leverage exerted by the operating member are considerable, it follows that the said bearings are all subject to more or less wear and strain, and that the friction is large. However, with my improved arrangement, the said hangers are composed of steel wire cables made fast at their upper and lower ends, the flexibility thereof being sufficient to permit the bodily forward and back motion of the jaw. In a similar manner cables are employed as the side members of the said yoke. These cables are made fast at one end to the upper end of the lever or operating member, and at the other end to the bed or body of the crusher. With this arrangement the number of frictional bearings is reduced practically to a minimum, there being only one for the jaw-that is, where its arm engages the lever or other operating member. All friction is eliminated at the ends of the hangers for the jaw, and' at the ends of the yoke. Consequently, there is lessresistance to be overcome in the operation ofthe crusher, less Wear and tear on the parts, and less danger of breakage. d

In the accompanying drawings,-Figure 1 is a longitudinal section of a crusher embodying the principles of my invention. Fig. 2 is a sectional plan of the said crusher. Fig. 3 is a cross section on line 3--3 in Fig. I.

As thus illustrated, the bed A and the stationary jaw B can be of any suitable form or construction. The movable jaw C has a rear arm c which engages the lever or operating member I), and the latter is actuated at its lower end by an eccentric E. A spring F on the rod G tends to retract the jaw C, after the same has been forced forward by the lever. The hangers H support the movable jaw C, and are attached at their lower ends to a bar h upon which the lower end of the jaw rests. At their upper ends said hangers are secured to the sides of the bed A. Each hanger is composed of a short length of steel wire cable having its ends spreadand suitably secured in place, as by Babbitt metal.

The yoke members I are secured at one end to the bed A, and their other ends to the top of the lever D, thus serving as a fulcrum for said member. Vhen the jaw moves forward, the crushing strain is received by the said members I as a tensile strain-that is, a pull. Each member I is composed of a length of steel wire cable having its ends spread and secured in place, as by Babbitt metal. The flexibility of all of said. cables is sufficient to permit the necessary movements of the j aw and lever, and frictional bearings for the hangers and yoke are thus dispensed with. Other flexible connections can be employed in place of the said steel Wire cables. It will be seen that the said hangers and yoke-members are only attached at their opposite ends, and have their middle portions left free-that is to say, the hangers are attached at top and bottom only, and the swinging yoke-members are secured at their forward and rear ends only. In this way, each flexible hanger or yoke-member is subject only to tensile strain, in addition to the flexing action, and the movements are free and easy and without the friction and resistance which has heretofore characterized crushing machines of this character. Furthermore, it will be seen that I provide a jaw which has a combined oscillatory and bodily forward and back motion, and which is free from relatively moving contact surfaces at all points eXcept one, namely Where its arm connects with the lever or other member by which it is actuated. So far as I am aware, therefore, I am the first to provide a jaw of this kind, in which the wear is absolutely limited to a single bearing or joint, and in which the supporting means for the jaw leaves the same free from relatively moving contact surfaces.

What I claim as my invention is:

l. In a Crusher, a bed or body, a movable jaw, means for actuating said jaw, and flexi- IIO ble hangers depending from said bed or body for supporting said jaw, said hangers attached rigidly and only at their upper and lower ends.

2. In a Crusher, a movable jaw, means for actuating said jaw, and steel wire c 'abIe hangers for said jaw, as set forth.

3. In a crusher, an operating member, a bed or body, a movable jaw operated by the said member, and iieXible yoke-members connecting the said member with said bed or body, said yoke-members attached rigidly and only at their forward and rear ends.

4. In a crusher, an operating member, a bed or body, a movable jaw operated by the said member, and steel wire cables connecting the said member with the said bed or body, as set forth.

5. A crusher comprising a movable jaw, a bed or body, a stationary jaw opposed to the movable jaw, flexible hangers constituting the sole means of support for the movable jaw, a lever having a jointed connection with the movable jaw, and a swinging yoke connecting the lever with the said bed or body.

6. A crusher comprising a movable aw, a bed or body, a stationary jaw opposed to the movable jaw, suitable means for supporting the movable jaw, a lever having a jointed connection with the movable jaw, and a yoke having fIeXible side members connecting the Ievei with the bed or body.

7. A crusher comprising a movable aw, a bed or body, a stationary jaw opposed to the movable jaw, iieXible hangers for supporting the movable jaw, a lever having a jointed connection with the movable jaw, and a yoke having iieXible side-members connecting the lever with the bed or body.

8. In a crusher, a movable crushing jaw, a lever for actuating said jaw, a bed or body, and 'flexible means for connecting the bed or body with the lever to provide a fulcrum for the latter.

9. In a crusher, the combination of a movable jaw, a member for actuating said j aw, and means for supporting said jaw for a combined oscillatory and bodily forward and back motion free from relatively moving contact surfaces except at the point where the aw connects with said member.

Signed by me, at Chicago, Ill., this 13th day of May, 1907.

MORTON G. BUNNELL.

Vitnesses:

SARAH LEWIS, ALBERT JOHN LAUsER. 

